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Charles: I suggest that we compile a reference list of miai values. These are rational numbers, but I propose we round to two decimal places to keep things relatively clear: 0.005 of a point is really a matter for the experts.
Bill: In practice, 0.5 +/- is good enough precision. E. g., 1.0- is better than 0.5+. There will be times when a tiny fraction of a point will make a difference, but figuring that fraction is not usually easier than reading it out, anyway. ;-)
In fact, as I add plays, I'm starting to feel that 2 decimal points is tedious. Yes, there is a difference between 1.73 and 1.75. But really!
Charles: It gives an ordering. When this list gets spread out over many pages I think this level of detail will look appropriate.
jfc: yes! The point of precision is not that the values are likely to be useful in a real game but that precise values more correctly illustrate the underlying algorithm. It is much harder for a newbie to extrapolate backwards from fuzzy values like approximately -2.5 points.
Bill: Bueno, Carlos! :-)
See /Discussion for questions and discussion about material on these pages.
Conventions:
Bill: For posters: Please show territory unambiguously. E. g., close it off. Also, give the initial count.
Suggestion 2: If your diagram leaves more play, say how much the next play is worth. That will help the reader look it up. Also indicate the value of any sente followup.
You can also link to the relevant followers, if they exist. And create them, if necessary.
[1] Territory scoring, naturally; add one for area scoring (see Miai counting - ratio explanation, 'pedantic note about scoring method' for why, and note that points in seki may make a difference as well). Explanations can be added to this page, and annotations (links to other pages, too). The point would be to consolidate a list.
Tom: Is it completely correct to say that you should add one for area scoring?
Bill: Yes, except for some sekis and kos. (Also, territory scoring is not monolithic here. Some versions count territory in seki, for instance.)
I thought a dame had a value of a half, for example.
Bill: Nope. If Black gets a dame, the local area score is +1, if White gets it, it is -1: {1 | -1}.
Also, I think I've heard of ko fights for the last dame in chinese scoring, but I might have got the wrong end of the stick.
Bill: I think what you have heard is about one player's filling or taking and filling the ko while the opponent has no dame. If the territory miai value of the ko is 1/3, then its area miai value is 1 1/3. Since the opponent has no play to offset filling or taking the ko, except to fill territory, the player who wins the ko may gain 1 or 2 points more by area scoring than by territory scoring. See komonster.
If there is anything interesting to say about miai values for chinese scoring, I'd be keen on having a page for it.
[2] Black to play first (AFAICS we aren't adhering to this Charles): the sequence shown will naturally be Black's sente or ambiguous exactly when White is shown as the last to play. The default for values involving ko is the 'divide by three' miai counting convention. Some values, though, depend on the komaster concept.